Failure to cancel contract

I requested last week that my contract be cancelled and same hasnt been done to date...i spoke with Danielle Abrahams and she informed me that my contract is a month to month as l complained that they changed it to a 24 months contract without my consent and she reassured mw that it will remain a month to month contract however when i called to cancel it last week i was informed that its a 24 months contract , i requested a copy of the call recording between myself and danielle and it was not provided.i lodged a complaint on hello Peter last week and i havent received a call to date, perhaps i have to reffer the matter further in order to get any form of assistance. Cell c has the worst service delivery in SA